<gm:page title="Mashup" authenticate="false">

  <div style="float:left; width:50%">
    <gm:list id="CAParks" data="http://www.mapnut.com/calstatepark.xml"
      pagesize="25" />
  </div>

  <div style="float:left; width:50%">
    <gm:map id="CAParkMarkers" data="${CAParks}" latref="geo:lat" lngref="geo:long">
      <gm:handleEvent src="CAParks" />
    </gm:map>
  </div>
</gm:page>